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/*
 * Copyright 2011 the original author or authors.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.jayway.jsonpath.spi.mapper;

import com.jayway.jsonpath.Configuration;
import com.jayway.jsonpath.TypeRef;

import java.util.ArrayList;

public class TapestryMappingProvider implements MappingProvider {

  @Override
  public  T map(final Object source, final Class targetType, final Configuration configuration) {
    if (source == null) {
      return null;
    }
    if (targetType.isAssignableFrom(source.getClass())) {
      return (T) source;
    }
    try {
      if (targetType.isAssignableFrom(ArrayList.class) && configuration.jsonProvider().isArray(source)) {
        int length = configuration.jsonProvider().length(source);
        @SuppressWarnings("rawtypes")
        ArrayList list = new ArrayList(length);
        for (Object o : configuration.jsonProvider().toIterable(source)) {
          list.add(o);
        }
        return (T) list;
      }
    } catch (Exception e) {

    }
    throw new MappingException("Cannot convert a " + source.getClass().getName() + " to a " + targetType
        + " use Tapestry's TypeCoercer instead.");
  }

  @Override
  public  T map(final Object source, final TypeRef targetType, final Configuration configuration) {
    throw new UnsupportedOperationException(
        "Tapestry JSON provider does not support TypeRef! Use a Jackson or Gson based provider");
  }

}